ClipArt ETC
"Diagram of the anterior fin (archipterygium) of Ceratodus." — Galloway

Archipterygium

"Diagram of the anterior fin (archipterygium) of Ceratodus." — Galloway

"Labrax lupus (Bass), an Acanthopteryglan with anterior spinous and posterior soft dorsal fins." — Encyclopedia Britannica, 1893

Bass

"Labrax lupus (Bass), an Acanthopteryglan with anterior spinous and posterior soft dorsal fins." —…

"Upper Sectorial Teeth of Carnivora. I, Felis; II, Canis; III, Ursus, 1, anterior, 2, middle, and 3, posterior in position, and without distinct root, characteristic of the Ursidae." —The Encyclopedia Britannica, 1903

Carnivora

"Upper Sectorial Teeth of Carnivora. I, Felis; II, Canis; III, Ursus, 1, anterior, 2, middle, and 3,…

"Catadioptric Holophote.—Part of the anterior hemisphere of rays is intercepted and at once parallelized by the lens L, whose principal focus (i.e., for parallel rays) is in the center of the flame, while the remainder is intercepted and made parallel by the paraboloid a, and thus the double agents in Fresnel's design are dispensed with. The rays of the posterior hemisphere are reflected by the spherical mirror b back again through the foxus, whence passing onwards one portion of them falls on the lens and the rest on the paraboloid, so as finally to emerge in union with and parallel to the front rays." —The Encyclopedia Britannica, 1910

Catadioptric Holophote

"Catadioptric Holophote.—Part of the anterior hemisphere of rays is intercepted and at once parallelized…

"Catadioptric Holophote.—Part of the anterior hemisphere of rays is intercepted and at once parallelized by the lens L, whose principal focus (i.e., for parallel rays) is in the center of the flame, while the remainder is intercepted and made parallel by the paraboloid a, and thus the double agents in Fresnel's design are dispensed with. The rays of the posterior hemisphere are reflected by the spherical mirror b back again through the foxus, whence passing onwards one portion of them falls on the lens and the rest on the paraboloid, so as finally to emerge in union with and parallel to the front rays." —The Encyclopedia Britannica, 1910

Catadioptric Holophote

"Catadioptric Holophote.—Part of the anterior hemisphere of rays is intercepted and at once parallelized…

"When the corolla is separated into two unequal divisions, called the anterior, or lower, and posterior, or upper lips."—Darby, 1855

Ringent Corolla

"When the corolla is separated into two unequal divisions, called the anterior, or lower, and posterior,…

"The Red-Throated Dragon shows a large membranous expansion (b b) situated between the anterior (d d) and posterior extremities, and supported by the ribs. The dragon by this arrangement can take extensive leaps with perfect safety."—pettigrew, 1874

Red-Throated Dragon

"The Red-Throated Dragon shows a large membranous expansion (b b) situated between the anterior (d d)…

"Shows how the bones of the arm (q), forearm (q'x), and foot (o), are twisted to form an osseous screw."—Pettigrew, 1875

Anterior Extremity of Elephant

"Shows how the bones of the arm (q), forearm (q'x), and foot (o), are twisted to form an osseous screw."—Pettigrew,…

The anterior surface of the right femur.

Femur

The anterior surface of the right femur.

"Holophotal Catadioptric Apparatus Revolving round a Central Flame." —The Encyclopedia Britannica, 1910

Holophotal Catadioptric

"Holophotal Catadioptric Apparatus Revolving round a Central Flame." —The Encyclopedia Britannica,…

An anterior view of the left humerus.

Humerus

An anterior view of the left humerus.

A view of the left semilunar from the anterior and internal surfaces.

Left Semilunar

A view of the left semilunar from the anterior and internal surfaces.

The medicinal leech is a leech used in bloodletting. It lives in fresh water, and is common in Germany, Bohemia, and Russia. Its diet consists of the blood of vertebrates, to which the leech attaches itself by its suckers. Of these, one is posterior and imperforate, the other anterior, with the mouth in the center. Within the mouth lie three triangular tooth-plates, by means of which a small triradiate incision is made in the skin of the animal attacked. This done, the leech proceeds to fill its crop, which extends almost from end to end of the body, and has eleven lateral pockets. When these have become distended with blood, the leech drops from its temporary host, and the slow process of digestion begins. Leeches usually move by attaching alternately the anterior and posterior suckers, somewhat after the fashion of a 'looping caterpillar', but they can also swim by movements of the whole body. The eggs are laid in cocoons in damp earth.

Medicinal Leech

The medicinal leech is a leech used in bloodletting. It lives in fresh water, and is common in Germany,…

This illustration shows the arrangement of the nervous material in the anterior end of an Oligochete Worm, seen in profile. That part of the body wall nearest the observer is supposed to be removed. a, anterior; b.w., body wall; g, dorsal ganglia (brain); g', ventral chain of ganglia; n, nerve ring around the pharynx; o, mouth; p, pharynx.

Oligochete Worm

This illustration shows the arrangement of the nervous material in the anterior end of an Oligochete…

"Paramecium in optical section. A, anterior end; c, tilia; e.d., ectosarc; e.n., endosarc; f.v., food "vacuole"; g, gullet; N, meganucleus; n, micronucleus; o, oral groove, leading to the mouth; p.v., pulsating vacuoles in different stages of contraction; tr., trichocysts; v, food vacuole in process of formation." — Galloway

Paramecium

"Paramecium in optical section. A, anterior end; c, tilia; e.d., ectosarc; e.n., endosarc; f.v., food…

An anterior view of the radius and ulna.

Radius and Ulna

An anterior view of the radius and ulna.

"Schizomus crassicaudatus, a Tartarid Pedipalp. Dorsal view of a male with the appendages cut short. I to VI. The prosomatic appendages. a, Anterior plate. b, Posterior plate of the prosomatic carapace. prae-gen, Tergum of the praegenital somite. II, The eleventh somite of the opisthosoma. pa, Post-anal lobe of the male—a conical body with narrow basal stalk." — The Encyclopedia Britannica, 1910

Schizomus

"Schizomus crassicaudatus, a Tartarid Pedipalp. Dorsal view of a male with the appendages cut short.…

The anterior (ventral) surface of the sternum and the costal cartilages.

Sternum

The anterior (ventral) surface of the sternum and the costal cartilages.

"Thelyphonus assamensis, Ventral surface of the anterior region of the opisthosoma, the first somite being pushed upwards and forwards so as to expose the subjacent structures. opistho 1, First somite of the opisthosoma; opistho 2, second do.; g, genital aperture; l, edges of the lamellae of the lung-books; m, stigmata of tergo-sternal muscles." — The Encyclopedia Britannica, 1910

Thelyphonus assamensis

"Thelyphonus assamensis, Ventral surface of the anterior region of the opisthosoma, the first somite…

The anterior surface of the tibia and fibula of the right leg.

Tibia and Fibula

The anterior surface of the tibia and fibula of the right leg.